Formation and Properties of Selenium Double-Helices inside Double-Wall Carbon Nanotubes: Experiment and Theory
نویسندگان
چکیده
منابع مشابه
Formation and properties of selenium double-helices inside double-wall carbon nanotubes: experiment and theory.
We report the production of covalently bonded selenium double-helices within the narrow cavity inside double-wall carbon nanotubes. The double-helix structure, characterized by high-resolution transmission electron microscopy and X-ray diffraction, is completely different from the bulk atomic arrangement and may be considered a new structural phase of Se. Supporting ab initio calculations indic...
متن کاملinvestigation of the electronic properties of carbon and iii-v nanotubes
boron nitride semiconducting zigzag swcnt, $b_{cb}$$n_{cn}$$c_{1-cb-cn}$, as a potential candidate for making nanoelectronic devices was examined. in contrast to the previous dft calculations, wherein just one boron and nitrogen doping configuration have been considered, here for the average over all possible configurations, density of states (dos) was calculated in terms of boron and nitrogen ...
15 صفحه اولField emission properties of double-wall carbon nanotubes
Using a first-principles method, we study field emission properties of double-wall carbon nanotubes with various end geometries and combinations of inner and outer walls. The open double-wall nanotubes exhibit substantial contribution to the emission current from the extended π states. These states are insensitive to the detailed tip structure or the presence of foreign adsorbed molecules and t...
متن کاملElectronic transport properties of double-wall carbon nanotubes
Subhadeep Datta,1 Shidong Wang,2 Carmen Tilmaciu,3 Emmanuel Flahaut,4 Laëtitia Marty,1 Milena Grifoni,5 and Wolfgang Wernsdorfer1 1Institut Néel, CNRS and Université Joseph Fourier, BP 166, F-38042 Grenoble Cedex 9, France 2Department of Mechanical Engineering and Materials Science, Duke University, Durham, North Carolina 27708, USA 3Université de Toulouse, UPS, INP, Institut Carnot Cirimat, 11...
متن کاملPhotocurrent spectroscopy of double wall carbon nanotubes
We describe spectroscopy measurements of double wall carbon nanotubes using a displacement photocurrent technique. Peaks in the photocurrent are observed at excitation energies corresponding to the spacing of van Hove singularities for both the inner and outer shells of the nanotube. The shell assignment for the peaks can be made by comparing the spectra before and after the formation of the in...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: ACS Nano
سال: 2013
ISSN: 1936-0851,1936-086X
DOI: 10.1021/nn4019703